Features: 1. Sound Quality: The High-Fidelity Tube Preamplifier Is Equipped With Two Soviet 6h3n Tubes Inside. The Sound Is Warm And Dynamic, With Rich Rhythm, Giving Your Hifi System A Dynamic Sound. 2. Easy To Carry: This High-Fidelity Preamplifier Is Small And , So You Can Put It Anywhere And Use It Comfortably 3. Versatility: This High-Fidelity Preamplifier Has Four Rca Input Jacks And Two Rca Output Jacks, Allowing You To Connect A Of High-Fidelity Equipment, Thereby Avoiding Tedious Wiring Operations And Allowing You To Switch Between Them. 4. Other Features: The Vu Meter Is Equipped With A Yellow Warm Light To Turn Off, And The Vu Meter Pointer Will Swing Regularly With The Rhythm Of The Music, Adding Atmosphere To Your Listening. 5. The Product Is Equipped With A 3.5mm Headphone Jack, You Can Connect Headphones And Listen To Beautiful Music Alone Without Disturbing Others. Description: Product Type: Storage Communication Interface: SPI Power Supply Current: 10A Plug Type: US Plug, it applies to Canada, India, Mexico, Thailand, Taiwan, the , the Philippines and so on. voltage: AC100-240V Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Will Not Affect The Use Material: plastic Specifications & colour: AS-1000 (No Bluetooth Version), A-Black Package Contents: 1 x Tube Preamp 1 x Remote Control 1 x Antenna 1 Adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.